diff --git a/Structural/Decorator/Tests/DecoratorTest.php b/Structural/Decorator/Tests/DecoratorTest.php
index 1789870..437f068 100644
--- a/Structural/Decorator/Tests/DecoratorTest.php
+++ b/Structural/Decorator/Tests/DecoratorTest.php
@@ -50,6 +50,21 @@ class DecoratorTest extends \PHPUnit_Framework_TestCase
      * @expectedException \PHPUnit_Framework_Error
      */
     public function testDecoratorTypeHinted()
+    {
+        if (version_compare(PHP_VERSION, '7', '>=')) {
+            throw new \PHPUnit_Framework_Error('Skip test for PHP 7', 0, __FILE__, __LINE__);
+        }
+
+        $this->getMockForAbstractClass('DesignPatterns\Structural\Decorator\Decorator', array(new \stdClass()));
+    }
+
+    /**
+     * Second key-point of this pattern : the decorator is type-hinted
+     *
+     * @requires PHP 7
+     * @expectedException TypeError
+     */
+    public function testDecoratorTypeHintedForPhp7()
     {
         $this->getMockForAbstractClass('DesignPatterns\Structural\Decorator\Decorator', array(new \stdClass()));
     }
diff --git a/composer.json b/composer.json
index a754501..230ea33 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
     ],
     "minimum-stability": "stable",
     "require-dev": {
-        "phpunit/phpunit": "4.6.*",
+        "phpunit/phpunit": "~4.6",
         "squizlabs/php_codesniffer": "1.5.*"
     },
     "autoload": {
diff --git a/composer.lock b/composer.lock
index a9fa4ad..aac9505 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "fd9fc5e6da0104ab5a4bd03fcf53f73a",
+    "hash": "b2d8b0e179e33882664013cfe68f65f8",
     "packages": [],
     "packages-dev": [
         {
@@ -112,16 +112,16 @@
         },
         {
             "name": "phpspec/prophecy",
-            "version": "v1.4.1",
+            "version": "v1.5.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpspec/prophecy.git",
-                "reference": "3132b1f44c7bf2ec4c7eb2d3cb78fdeca760d373"
+                "reference": "4745ded9307786b730d7a60df5cb5a6c43cf95f7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/3132b1f44c7bf2ec4c7eb2d3cb78fdeca760d373",
-                "reference": "3132b1f44c7bf2ec4c7eb2d3cb78fdeca760d373",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/4745ded9307786b730d7a60df5cb5a6c43cf95f7",
+                "reference": "4745ded9307786b730d7a60df5cb5a6c43cf95f7",
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             },
             "require": {
@@ -168,20 +168,20 @@
                 "spy",
                 "stub"
             ],
-            "time": "2015-04-27 22:15:08"
+            "time": "2015-08-13 10:07:40"
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "2.1.8",
+            "version": "2.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "6044546998c7627ab997501a3d0db972b3db9790"
+                "reference": "2d7c03c0e4e080901b8f33b2897b0577be18a13c"
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             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/6044546998c7627ab997501a3d0db972b3db9790",
-                "reference": "6044546998c7627ab997501a3d0db972b3db9790",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/2d7c03c0e4e080901b8f33b2897b0577be18a13c",
+                "reference": "2d7c03c0e4e080901b8f33b2897b0577be18a13c",
                 "shasum": ""
             },
             "require": {
@@ -189,7 +189,7 @@
                 "phpunit/php-file-iterator": "~1.3",
                 "phpunit/php-text-template": "~1.2",
                 "phpunit/php-token-stream": "~1.3",
-                "sebastian/environment": "~1.0",
+                "sebastian/environment": "^1.3.2",
                 "sebastian/version": "~1.0"
             },
             "require-dev": {
@@ -204,7 +204,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.1.x-dev"
+                    "dev-master": "2.2.x-dev"
                 }
             },
             "autoload": {
@@ -230,20 +230,20 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2015-07-13 11:25:58"
+            "time": "2015-08-04 03:42:39"
         },
         {
             "name": "phpunit/php-file-iterator",
-            "version": "1.4.0",
+            "version": "1.4.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-file-iterator.git",
-                "reference": "a923bb15680d0089e2316f7a4af8f437046e96bb"
+                "reference": "6150bf2c35d3fc379e50c7602b75caceaa39dbf0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-file-iterator/zipball/a923bb15680d0089e2316f7a4af8f437046e96bb",
-                "reference": "a923bb15680d0089e2316f7a4af8f437046e96bb",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-file-iterator/zipball/6150bf2c35d3fc379e50c7602b75caceaa39dbf0",
+                "reference": "6150bf2c35d3fc379e50c7602b75caceaa39dbf0",
                 "shasum": ""
             },
             "require": {
@@ -277,7 +277,7 @@
                 "filesystem",
                 "iterator"
             ],
-            "time": "2015-04-02 05:19:05"
+            "time": "2015-06-21 13:08:43"
         },
         {
             "name": "phpunit/php-text-template",
@@ -322,16 +322,16 @@
         },
         {
             "name": "phpunit/php-timer",
-            "version": "1.0.6",
+            "version": "1.0.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-timer.git",
-                "reference": "83fe1bdc5d47658b727595c14da140da92b3d66d"
+                "reference": "3e82f4e9fc92665fafd9157568e4dcb01d014e5b"
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-                "reference": "83fe1bdc5d47658b727595c14da140da92b3d66d",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-timer/zipball/3e82f4e9fc92665fafd9157568e4dcb01d014e5b",
+                "reference": "3e82f4e9fc92665fafd9157568e4dcb01d014e5b",
                 "shasum": ""
             },
             "require": {
@@ -359,20 +359,20 @@
             "keywords": [
                 "timer"
             ],
-            "time": "2015-06-13 07:35:30"
+            "time": "2015-06-21 08:01:12"
         },
         {
             "name": "phpunit/php-token-stream",
-            "version": "1.4.3",
+            "version": "1.4.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-token-stream.git",
-                "reference": "7a9b0969488c3c54fd62b4d504b3ec758fd005d9"
+                "reference": "3ab72c62e550370a6cd5dc873e1a04ab57562f5b"
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-                "reference": "7a9b0969488c3c54fd62b4d504b3ec758fd005d9",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-token-stream/zipball/3ab72c62e550370a6cd5dc873e1a04ab57562f5b",
+                "reference": "3ab72c62e550370a6cd5dc873e1a04ab57562f5b",
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             },
             "require": {
@@ -408,20 +408,20 @@
             "keywords": [
                 "tokenizer"
             ],
-            "time": "2015-06-19 03:43:16"
+            "time": "2015-08-16 08:51:00"
         },
         {
             "name": "phpunit/phpunit",
-            "version": "4.6.10",
+            "version": "4.8.6",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "7b5fe98b28302a8b25693b2298bca74463336975"
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+                "reference": "2246830f4a1a551c67933e4171bf2126dc29d357",
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@@ -431,15 +431,15 @@
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-                "phpspec/prophecy": "~1.3,>=1.3.1",
-                "phpunit/php-code-coverage": "~2.0,>=2.0.11",
+                "phpspec/prophecy": "^1.3.1",
+                "phpunit/php-code-coverage": "~2.1",
                 "phpunit/php-file-iterator": "~1.4",
                 "phpunit/php-text-template": "~1.2",
-                "phpunit/php-timer": "~1.0",
+                "phpunit/php-timer": ">=1.0.6",
                 "phpunit/phpunit-mock-objects": "~2.3",
                 "sebastian/comparator": "~1.1",
                 "sebastian/diff": "~1.2",
-                "sebastian/environment": "~1.2",
+                "sebastian/environment": "~1.3",
                 "sebastian/exporter": "~1.2",
                 "sebastian/global-state": "~1.0",
                 "sebastian/version": "~1.0",
@@ -454,7 +454,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.6.x-dev"
+                    "dev-master": "4.8.x-dev"
                 }
             },
             "autoload": {
@@ -480,26 +480,27 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2015-06-03 05:03:30"
+            "time": "2015-08-24 04:09:38"
         },
         {
             "name": "phpunit/phpunit-mock-objects",
-            "version": "2.3.5",
+            "version": "2.3.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit-mock-objects.git",
-                "reference": "1c330b1b6e1ea8fd15f2fbea46770576e366855c"
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-                "reference": "1c330b1b6e1ea8fd15f2fbea46770576e366855c",
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+                "reference": "5e2645ad49d196e020b85598d7c97e482725786a",
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             "require": {
-                "doctrine/instantiator": "~1.0,>=1.0.2",
+                "doctrine/instantiator": "^1.0.2",
                 "php": ">=5.3.3",
-                "phpunit/php-text-template": "~1.2"
+                "phpunit/php-text-template": "~1.2",
+                "sebastian/exporter": "~1.2"
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@@ -535,20 +536,20 @@
                 "mock",
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             ],
-            "time": "2015-07-04 05:41:32"
+            "time": "2015-08-19 09:14:08"
         },
         {
             "name": "sebastian/comparator",
-            "version": "1.1.1",
+            "version": "1.2.0",
             "source": {
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                 "url": "https://github.com/sebastianbergmann/comparator.git",
-                "reference": "1dd8869519a225f7f2b9eb663e225298fade819e"
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@@ -562,7 +563,7 @@
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+                    "dev-master": "1.2.x-dev"
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@@ -599,7 +600,7 @@
                 "compare",
                 "equality"
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-            "time": "2015-01-29 16:28:08"
+            "time": "2015-07-26 15:48:44"
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@@ -655,16 +656,16 @@
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         {
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-            "version": "1.2.2",
+            "version": "1.3.2",
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                 "url": "https://github.com/sebastianbergmann/environment.git",
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@@ -701,20 +702,20 @@
                 "environment",
                 "hhvm"
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-            "time": "2015-01-01 10:01:08"
+            "time": "2015-08-03 06:14:51"
         },
         {
             "name": "sebastian/exporter",
-            "version": "1.2.0",
+            "version": "1.2.1",
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@@ -767,7 +768,7 @@
                 "export",
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-            "time": "2015-01-27 07:23:06"
+            "time": "2015-06-21 07:55:53"
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@@ -822,16 +823,16 @@
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             "name": "sebastian/recursion-context",
-            "version": "1.0.0",
+            "version": "1.0.1",
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                 "url": "https://github.com/sebastianbergmann/recursion-context.git",
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@@ -871,7 +872,7 @@
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-            "time": "2015-01-24 09:48:32"
+            "time": "2015-06-21 08:04:50"
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@@ -985,16 +986,16 @@
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-            "version": "v2.7.2",
+            "version": "v2.7.3",
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                 "url": "https://github.com/symfony/Yaml.git",
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@@ -1030,7 +1031,7 @@
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+            "time": "2015-07-28 14:07:07"
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